To each his own, of course. But, I like the way XM shakes up some of its programming every now and then. During the holiday season, several of their channels are re-designated to 24 hours of Christmas music. On the anniversary of D-Day, the 40's channel plays classic, authentic news reports about WWII. On big travel weekends (i.e. Thanksgiving), a music channel might highlight a particular artist throughout the day. On the 50's channel (or is it 60's?) there is a "here and there" show, which compares the top 10 songs in Britain and the U.S. for a particular week. On the movie soundtrack channel, they will play a short, classic scene from a popular movie, and then play that very movies' title theme. etc.
The use of d.j.'s is very little, normally just telling you what is playing on another stations and plugging upcoming special programming.